摘要
Hyperlanins A(1)and B(2),two highly rearranged polycyclic polyprenylated acylphloroglucinol(PPAP)-related meroterpenoids based on different new carbon skeletons,were isolated from Hypericum lancasteri.Compound 1 incorporates an unprecedented 5/6/7/5 ring system featuring a 3,13-dioxatetracyclo[9.2.1.12.5.01.8]pentadecane core.Compound 2 possesses a unique compact 6/6/5/6/6/5/6 ring system with a caged tetracyclo[6.2.1.13.8.05,11]dodecane motif.Their structures were established by spectroscopic data,X-ray diffraction,and computational approaches.Both compounds showed anti-inflammatory activity in vitro.Compounds 1 and 2 could decrease the lipopolysaccharide(LPS)-/nigericin-induced IL-1βrelease in THP-1 cells.Both compounds also showed inhibition in hypoxia-inducible factor-1α(HIF-1αa)pathway luciferase reporter assay.
基金
supports from the National Natural Science Foundation of China(Grant No.22277074)
Zhiyuan Future Scholar Program(Grant No.ZIRC2022-14)of Zhiyuan College,Shanghai Jiao Tong University are gratefully acknowledged.
